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LUCKY_DIMON [66]
2 years ago
10

A test organism develops a genetic mutation that causes neurons to develop without synaptic knobs. How will this impact neuronal

function\?
Biology
1 answer:
kvv77 [185]2 years ago
8 0

Answer:

The electrical signal will not be converted into chemical signal.

Explanation:

The synaptic knob is the bulbous enlargement also called synaptic terminal preset at the end of the axon.

The synaptic knob is a living cell and thus contains all the living features but they also contain the vesicles which store the neurotransmitters, therefore, synaptic knob acts as a site which converts the electrical signal into a chemical signal. The released neurotransmitter from the synaptic knob interacts with the post neuron or recipient neuron.

If the mutation develops in the neurons which result in the formation of neurons without synaptic knob therefore the electrical signal will not be converted into a chemical signal and thus signal will stop.

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Mason drew the cladogram shown. Which statements best describes the cladogram? Select three options. (HURRY I WILL MARK BRAINLIE
Yuki888 [10]

Answer: Correct options B, D and E.

Explanation:

In the cladogram, we can see that in the first branch we have a division, one branch goes to fish and the other goes to a division (a division means a common ancestor)

Then the fish are the most primitive (being directly related to the first ancestor)., E is true.

We also can see that between fish and birds we have 3 separations (the ancestor in common is 3 "generations" behind), and between frog and birds we have two separations (the common ancestor is 2 "generations" behind), so frogs are more closely related to birds than fish.

So D is also true.

We also can see that the only pair that has only one ancestor in common are birds and reptiles, so the ones that are most closely related are birds and reptiles. B is also true,

7 0
2 years ago
A student compares the four distinct cells that could form from the stem cell after differentiation. Which statement accurately
e-lub [12.9K]

Answer:

The statement that accurately compares and contrasts the red blood cell and the white blood cell is that both have the same copy of DNA, but different genes are expressed in the two cell types.

Explanation:

Red blood cells (RBC) and white blood cells (WBC) are two highly differentiated types of cells that come from the hematopoietic system and have different functions in the blood.

Compared to WBC , RBC cells lack a nucleus and have fewer organelles, and their function is to transport gases in the blood, unlike the former which are involved in the body's defence.

<em>Cell differentiation is based on gene expression of the genome, resulting in different types of proteins synthesized in each cell, which give them a different structure and function. </em>

Both <u>WBC and RBC have the same genome</u>, but different genes are expressed in each, giving them different morphological and functional characteristics.

Learn more:

Stem cells - cell differentiation brainly.com/question/182160

8 0
2 years ago
Read 2 more answers
which of the following is a negative effect of the EPA's decision to monitor six greenhouse gases under the clean air act
frozen [14]
Because green house air is like carbon dioxide and is toxic for people to breathe in but they want to put it under an act that says it will cause u no harm
4 0
2 years ago
Explain in detail how galen, a physician during the middle ages, expanded on hippocrates’ theory of the four humors and explain
Ann [662]
<span>Hippocrates believed that there are four humors in human body which need balance for a healthy being. These were:
Blood, phlegm, yellow bile, and black bile.</span>
Galen expanded the idea of the humors and introduced four temperaments which were these:
choleric (hot / dry), melancholic (cold / dry), sanguine (warm / moist), and phlegmatic (cold / moist).
Another expansion Galen did was that he gave each humor/temperament physical and psychological qualities and said that even the food items have an association with the certain humor, those foods can effect certain humor in certain ways.
8 0
2 years ago
In classical conditioning the ns becomes a ________ after it reliably signals the impending occurrence of the ________.
nignag [31]
The answer is <span>c.CS; US.

In classical conditioning, a new behaviour is learned via association. The stage before conditioning involves: 1. unconditioned stimulus (US) which produces an unconditioned response, and 2. neutral stimulus (NS) which has no effect on a person and produce a response only when paired with </span>unconditioned stimulus. During conditioning, neutral stimulus (NS) and unconditioned stimulus (US) pair and neutral stimulus becomes a conditioned stimulus (CS). In other words, <span>the ns becomes a <u>CS</u> after it reliably signals the impending occurrence of the <u>US</u>. </span>
8 0
2 years ago
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